Code No. B1424: Right side-airbag module (squib) activating circuit short-circuited
Code No. B1425: Right side-airbag module (squib) activating circuit open-circuited
Code No. B1434: Left side-airbag module (squib) activating circuit short-circuited
Code No. B1435: Left side-airbag module (squib) activating circuit open-circuited
Code No. B1444: Right curtain air bag module (squib) activating circuit short-circuited
Code No. B1445: Right curtain air bag module (squib) activating circuit open-circuited
Code No. B1454: Left curtain air bag module (squib) activating circuit short-circuited
Code No. B1455: Left curtain air bag module (squib) activating circuit open-circuited
Code No. B1629: Front passenger’s lap pre-tensioner (squib) activating circuit short-circuited
Code No. B1630: Front passenger’s lap pre-tensioner (squib) system activating circuit open-circuited


caution If diagnosis codes is set in the SRS-ECU, always diagnose the CAN main bus line.

TROUBLE JUDGEMENT


These diagnosis code are set when a fault is detected in the SRS-ECU. The most likely causes for this code to be set are shown in the table below:

PROBABLE CAUSE


Malfunction of the SRS-ECU
Code No.
 Part/Circuit integral to SRS-ECU
 Trouble causes
B1424
 Side-airbag module (RH) (squib ignition drive circuit)
  • Short circuit in the squib ignition drive circuit
B1425
  • Open circuit in the squib ignition drive circuit
B1434
 Side-airbag module (LH) (squib ignition drive circuit)
  • Short circuit in the squib ignition drive circuit
B1435
  • Open circuit in the squib ignition drive circuit
B1444
 Curtain air bag module (RH) (squib ignition drive circuit)
  • Short circuit in the squib ignition drive circuit
B1445
  • Open circuit in the squib ignition drive circuit
B1454
 Curtain air bag module (LH) (squib ignition drive circuit)
  • Short circuit in the squib ignition drive circuit
B1455
  • Open circuit in the squib ignition drive circuit
B1629
 Lap pre-tensioner (passenger side) (squib ignition drive circuit)
  • Short circuit in the squib ignition drive circuit
B1630
  • Open circuit in the squib ignition drive circuit

DIAGNOSIS
Replace the SRS-ECU.